Beginning in 2013, JMA was engaged by Lawrence Berkeley National Laboratory (LBNL) to evaluate observations and survey data of significant movement along a section of the retaining wall supporting Alvarez Road. JMA, supported by its geotechnical partner A3GEO, collaborated closely with LBNL Facilities staff and its survey and other consultants to identify, evaluate and prepare concepts for alternatives for the rehabilitation of the retaining wall. A tie-back solution along a 150’ section of the wall was determined to be most feasible and cost effective. JMA led and participated in numerous meetings, and prepared exhibits and schematics for each, supporting LBNL’s engagement of internal stakeholders, cost estimating, and preparation of the project funding request. Significant design considerations included limiting access and other impacts at the project site–a critical transportation pinch point at LBNL– during construction, and identifying, mapping, and avoiding the complicated array of subsurface facilities behind the wall. JMA subsequently led the multi-disciplinary team, including structural and geotechnical partners, to prepare the final construction documents and project manual for the project. Due to the high-profile nature of the project, several rounds of design reviews were conducted with LBNL stakeholders to ensure all relevant input and coordination was obtained. During construction, the JMA team provided extensive construction observation, testing, and design support of the contractor’s activities. When a significant utility was impacted during construction, JMA led a rapid response to identify the issue, develop solutions, and obtain the input and consideration of LBNL to quickly implement the solution.
